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Edition and Publication:
< Natural Gas and Oil > Editorial Department
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China Petroleum Engineering & Construction Corporation Southwest Company
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China Petroleum Engineering & Construction Corporation
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Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
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Tang Xiaoyong,Pu Liming
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Issue:ISSN 1006-5539
CN 51-1183/TE

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The Experimental Study on the Flow Fields in the Spindle-Shaped Depressurizing Tools by PIV

Author of the article:Wu Di, Li Yilan, Ban Jiuqing, Zhang Wei, Zhang Weiwen, Yang Xingzhou

Author's Workplace：Institute of Petroleum Engineering, Northeast Petroleum University

Key Words：Polymer solutions; Depressurizing tank; PIV; Depressurizing tools

Abstract：In order to observe the change of flow fields of polymer solution of different molecular weight and flow running through depressurizing tools with different number of tanks, a set of experimental models about spindle shaped depressurizing tools which can be used in particle image velocimetry (PIV) system has been designed. The polymer solutions flowing through this model under different experimental conditions were taken a lot of photos by PIV system and instantaneous pictures have been obtained. Tecplot software is used to process images, and some velocity nephograms were obtained. Analysis of the results shows that when a polymer solution flows through the depressurizing channel, a vortex is formed at the bottom of the tank, and if the flow is becoming bigger, the vortex center at the bottom of the tank is farther away from the bottom of the tank. If the molecular weight is high or the number of depressurizing tank is less, the velocity gradient around the tank wall is also larger. The influence of the change of the number of tanks on the location of vortex is not obvious. The experimental provides a new method for the study of the flow field distribution in the future.